往复式骨架油封压力场的动态分析
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摘要
针对往复式骨架油封的损坏与泄漏问题,通过合理假设、部位简化以及等效力模拟等方式,采用控制变量法,在ABAQUS中,建立往复式骨架油封的有限元模型,分析过盈量、往复速度、摩擦因数及流体压力对往复式骨架油封密封性能的影响。通过分析发现:过盈量的增加,会导致等效应力的增大,进而使往复式骨架油封唇口部位损伤增大,影响密封性能;往复速度的增大,使进出行程的等效应力都增大,但总体来说,进行程的等效应力大于出行程的等效应力;摩擦因数的增大,使等效应力与接触压力均增大,但前者增长趋势比后者更加明显;流体压力的增大,导致等效应力和接触压力均增大,但是出行程的变化趋势相较于进行程的更加明显。
Aimed at the problems of damage and leakage of reciprocating skeleton oil seal,through reasonable assumption,simplified parts and equivalent force simulation,the finite element model of reciprocating skeleton oil seal was established based on the ABAQUS by using the control variable method. The effects of the initial interference quantity,reciprocating movement speed,friction coefficient and fluid pressure on the seal performance of reciprocating skeleton oil were analyzed. The analysis results show that the equivalent stress of the reciprocating skeleton oil seal is increased with the increase of the initial interference quantity,which will increase the damage of the lip of reciprocating skeleton oil seal and affect the sealing performance. The equivalent stress in the entry and exit of reciprocating skeleton oil is increased with the increase of reciprocating speed,and in general,the equivalent stress in the entry is greater than that in the exit. The equivalent stress and the contact pressure are increased with the increase of friction coefficient,while the growth trend of the former is more obvious than that of the latter. The equivalent stress and the contact pressure are also increased with the increase of fluid pressure,while the change trend in the exit is more obvious than that in the entry.
Aimed at the problems of damage and leakage of reciprocating skeleton oil seal,through reasonable assumption,simplified parts and equivalent force simulation,the finite element model of reciprocating skeleton oil seal was established based on the ABAQUS by using the control variable method. The effects of the initial interference quantity,reciprocating movement speed,friction coefficient and fluid pressure on the seal performance of reciprocating skeleton oil were analyzed. The analysis results show that the equivalent stress of the reciprocating skeleton oil seal is increased with the increase of the initial interference quantity,which will increase the damage of the lip of reciprocating skeleton oil seal and affect the sealing performance. The equivalent stress in the entry and exit of reciprocating skeleton oil is increased with the increase of reciprocating speed,and in general,the equivalent stress in the entry is greater than that in the exit. The equivalent stress and the contact pressure are increased with the increase of friction coefficient,while the growth trend of the former is more obvious than that of the latter. The equivalent stress and the contact pressure are also increased with the increase of fluid pressure,while the change trend in the exit is more obvious than that in the entry.
引文
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[3]王忠,许志沛,刘泽超,等.基于ABAQUS的O型密封圈在往复直线滑移密封下的泄漏量研究[J].现代制造工程,2013(9):74-78.WANG Z,XU Z P,LIU Z C,et al.Research on leakage of the O-ring under the reciprocating linear sliding sealed based on ABAQUS[J].Modern Manufacturing Engineering,2013(9):74-78.
[4]钟亮,赵俊利,范社卫.基于ABAQUS的O形密封圈密封性能仿真研究[J].煤矿机械,2014,35(3):52-54.ZHONG L,ZHAO J L,FAN S W.Simulation study on o-sealing sealing performance based on ABAQUS software[J].Coal Mine Machinery,2014,35(3):52-54.
[5]周志鸿,张康雷,李静,等.O形橡胶密封圈应力与接触压力的有限元分析[J].润滑与密封,2006,31(4):86-89.ZHOU Z H,ZHANG K L,LI J,et al.Finite element analysis of stress and contact pressure on the rubber sealing O-ring[J].Lubrication Engineering,2006,31(4):86-89.
[6]黄建龙,解广娟,刘正伟.基于Mooney-Rivlin和Yeoh模型的超弹性橡胶材料有限元分析[J].橡塑技术与装备,2008,34(12):22-26.HUANG J L,XIE G J,LIU Z W.Finite element analysis of super-elastic rubber materials based on the Mooney-Rivlin and Yeoh model[J].Plastics Technology and Equipment,2018,34(12):22-26.
[7]郑明军,王文静,陈政南,等.橡胶Mooney-Rivlin模型力学性能常数的确定[J].橡胶工业,2003,50(8):462-465.ZHENG M J,WANG W J,CHEN Z N,et al.Determination for mechanical constants of rubber Mooney-Rivlin model[J].China Rubber Industry,2003,50(8):462-465.
[8]王伟,邓涛,赵树高.橡胶Mooney-Rivlin模型中材料常数的确定[J].特种橡胶制品,2004,25(4):8-10.WANG W,DENG T,ZHAO S G.Determination for material constants of rubber Mooney-Rivlin model[J].Special Purpose Rubber Products,2004,25(4):8-10.
[9]OGDEN R W.Recent advances in the phenomenological theory of rubber elasticity[J].Rubber Chemistry and Technology,1986,59(3):361-383.
[10]李红振,谢苏江,朱宗亮.基于ABAQUS的X形密封圈密封特性分析[J].煤矿机械,2015,36(10):148-150.LI H Z,XIE S J,ZHU Z L.Analysis of sealing characteristics of X-ring based on ABAQUS[J].Coal Mine Machinery,2015,36(10):148-150.